首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1981篇
  免费   124篇
管理学   260篇
民族学   20篇
人才学   1篇
人口学   202篇
丛书文集   14篇
理论方法论   288篇
综合类   21篇
社会学   1023篇
统计学   276篇
  2024年   4篇
  2023年   26篇
  2022年   15篇
  2021年   33篇
  2020年   74篇
  2019年   94篇
  2018年   88篇
  2017年   113篇
  2016年   116篇
  2015年   73篇
  2014年   73篇
  2013年   301篇
  2012年   104篇
  2011年   99篇
  2010年   79篇
  2009年   70篇
  2008年   61篇
  2007年   62篇
  2006年   61篇
  2005年   50篇
  2004年   62篇
  2003年   47篇
  2002年   39篇
  2001年   22篇
  2000年   22篇
  1999年   24篇
  1998年   25篇
  1997年   19篇
  1996年   19篇
  1995年   17篇
  1994年   28篇
  1993年   19篇
  1992年   23篇
  1991年   13篇
  1990年   10篇
  1989年   11篇
  1988年   11篇
  1987年   5篇
  1986年   6篇
  1985年   11篇
  1984年   5篇
  1983年   7篇
  1982年   5篇
  1981年   5篇
  1980年   9篇
  1979年   9篇
  1978年   5篇
  1976年   7篇
  1974年   4篇
  1971年   4篇
排序方式: 共有2105条查询结果,搜索用时 15 毫秒
831.
The relationship between children's material circumstances and child abuse and neglect raises a series of questions for policy, practice, and practitioners. Children and families in poverty are significantly more likely to be the subject of state intervention. This article, based on a unique mixed‐methods study of social work interventions and the influence of poverty, highlights a narrative from practitioners that argues that, as many poor families do not harm their children, it is stigmatizing to discuss a link between poverty and child abuse and neglect. The data reveal that poverty has become invisible in practice, in part justified by avoiding stigma but also because of a lack of up‐to‐date research knowledge and investment by some social workers in an “underclass” discourse. We argue, in light of the evidence that poverty is a contributory factor in the risk of harm, that it is vital that social work engages with the evidence and in critical reflection about intervening in the context of poverty. We identify the need for fresh approaches to the harms children and families face in order to support practices that engage confidently with the consequences of poverty and deprivation.  相似文献   
832.
Separate and unequal: post-tsunami aid distribution in Southern India   总被引:1,自引:0,他引:1  
Objective. Disasters are a regular occurrence throughout the world. Whether all eligible victims of a catastrophe receive similar amounts of aid from governments and donors following a crisis remains an open question.Methods. I use data on 62 similarly damaged inland fishing villages in five districts of southeastern India following the 2004 Indian Ocean tsunami to measure the causal influence of caste, location, wealth, and bridging social capital on the receipt of aid. Using two-limit tobit and negative binomial models, I investigate the factors that influence the time spent in refugee camps, receipt of an initial aid packet, and receipt of 4,000 rupees.Results. Caste, family status, and wealth proved to be powerful predictors of beneficiaries and nonbeneficiaries during the aid process.Conclusion. While many scholars and practitioners envision aid distribution as primarily a technocratic process, this research shows that discrimination and financial resources strongly affect the flow of disaster aid.  相似文献   
833.
We present a combinatorial proof of two fundamental composition identities associated with Chebyshev polynomials. Namely, for all m,n?0m,n?0, Tm(Tn(x))=Tmn(x)Tm(Tn(x))=Tmn(x) and Um1(Tn(x))Un1(x)=Umn1(x).Um1(Tn(x))Un1(x)=Umn1(x).  相似文献   
834.
835.
The purpose of this replication study was to examine the relationships among life satisfaction, positive youth development and problem behaviour. The respondents were 7,151 Chinese Secondary 2 (Grade 8) students (3,707 boys and 3,014 girls) recruited from 44 schools in Hong Kong. Validated assessment tools measuring positive youth development, life satisfaction and problem behaviour were used. As predicted, positive youth development was positively correlated with life satisfaction, and positive youth development and life satisfaction were negatively correlated with adolescent problem behaviour. Based on a series of structural equation models, the present findings replicated the previous findings that adolescents with a higher level of positive youth development were more satisfied with life and had lesser problem behaviour, with higher level of life satisfaction and lower level of problem behaviour mutually influencing each other. These replicated findings provide a further advance in the literature on positive youth development, particularly in the Chinese context. Implications for future research and intervention were discussed.  相似文献   
836.
Although still-face effects are well-studied, little is known about the degree to which the Face-to-Face/Still-Face (FFSF) is associated with the production of intense affective displays. Duchenne smiling expresses more intense positive affect than non-Duchenne smiling, while Duchenne cry-faces express more intense negative affect than non-Duchenne cry-faces. Forty 4-month-old infants and their mothers completed the FFSF, and key affect-indexing facial Action Units (AUs) were coded by expert Facial Action Coding System coders for the first 30 s of each FFSF episode. Computer vision software, automated facial affect recognition (AFAR), identified AUs for the entire 2-min episodes. Expert coding and AFAR produced similar infant and mother Duchenne and non-Duchenne FFSF effects, highlighting the convergent validity of automated measurement. Substantive AFAR analyses indicated that both infant Duchenne and non-Duchenne smiling declined from the FF to the SF, but only Duchenne smiling increased from the SF to the RE. In similar fashion, the magnitude of mother Duchenne smiling changes over the FFSF were 2–4 times greater than non-Duchenne smiling changes. Duchenne expressions appear to be a sensitive index of intense infant and mother affective valence that are accessible to automated measurement and may be a target for future FFSF research.  相似文献   
837.
We investigated the conceptualization of values as mental constructs at the beginning of middle childhood. Values describe aspirations guiding individuals in life. Although 6-year-olds report meaningful values, a past cross-sectional study suggested they may conceptualize them in non-mental terms. We interviewed children on their values at two time-points (N = 299, M age T1 = 7.25 years, Mage T2 = 7.94 years). Mental value conceptualization increased over time. Different value types were conceptualized in mental terms to a similar extent. At T2, self-important values were conceptualized in mental terms less than not-important ones. We also suggest that Theory of Mind (ToM) may be an underlying mechanism for the increased level of mental conceptualization over time. A cross-lagged panel model indicated that T1 ToM predicted advances in T2 mental conceptualization, and T1 mental conceptualization predicted advances in T2 ToM. As children develop in their understanding of the social world, their values may transform from observable to mental, possibly making them better motivators of behavior.  相似文献   
838.
839.
840.
Virginia's cohabitation registers were compiled after the Civil War to legalize the unions that had formed between enslaved couples and to legitimize the children of those couples. They provide valuable demographic information about more than 13,000 couples and their children – well over 50,000 individuals – drawn from 23 counties across the state. The registers can be very useful to historians of slavery and slave families, but when using them it is essential to understand why and how they were created, what exactly they include, and what they omit.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号